Optical imaging device
AssigneesCommissariat A L'energie Atomique Et Aux Energies Alternatives, Idemia Identity & Security France
InventorsJean-Francois Mainguet, Francois Templier
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Abstract
Optical imaging device comprising: an array of substantially point light sources, an array of photo-detectors interlaced with the array of light sources, an optical medium of thickness greater than the pitch of the photo-detectors and forming capture and detection surfaces, means for successively switching on and off each of a part of the light sources and reading a part of the photo-detectors receiving rays coming from the switched on source and having undergone reflection against the detection surface while forming an angle of incidence estimated as a function of the optical medium and the element to image.
Claims18
An optical imaging device comprising at least:
- an array of light sources each being substantially a point light source, produced on a substrate and forming a display screen,
- an array of photo-detectors produced on the substrate and interlaced with the array of light sources,
- an optical medium of thickness greater than a pitch of photo-detectors in the array of photo-detectors, covering the light sources and the photo-detectors, through which light intended to be emitted by the light sources is capable of propagating, and forming a capture surface against which an element to image is intended to be arranged and a detection surface substantially parallel to the capture surface and against which the arrays of light sources and photo-detectors are arranged,
- a controller and a reader, configured for successively switching on and off each of a part of the light sources and, during the switching on of each of said part of the light sources, reading at least one part of the photo-detectors intended to receive light rays coming from a switched-on light source of the light sources and having undergone reflection against the capture surface while forming, with the capture surface, an angle of incidence estimated as a function of the optical medium and the element to image.
Dependencies are inferred from the claim text.